Abstract: A secondary battery negative electrode material comprises a framework, a chelating/adsorption group and an active substance. The framework does not participate in electrochemical reaction, and only provides a carrier for the chelating/adsorption group (represented by iminodiacetic acid chelating groups in Figure), which contains N, S, P, O atoms having lone pair electrons in outer electrons and has chelating/chemical adsorption bonds formed between it and bivalent/polyvalent metals. The active substance is bivalent/polyvalent metal ion that can be reduced into lower valence states. The active substance metal ion is reduced, during charging, to metal in a lower valence/metal elemental state, which reversely forms, during discharging, the metal ion and has chelating/chemical adsorption bonds formed between it and the chelating/adsorption group. The negative electrode material can form a battery together with positive electrode materials.

Abstract: A secondary battery negative electrode material comprises a framework, a chelating/adsorption group and an active substance. The framework does not participate in electrochemical reaction, and only provides a carrier for the chelating/adsorption group (represented by iminodiacetic acid chelating groups in Figure), which contains N, S, P, O atoms having lone pair electrons in outer electrons and has chelating/chemical adsorption bonds formed between it and bivalent/polyvalent metals. The active substance is bivalent/polyvalent metal ion that can be reduced into lower valence states. The active substance metal ion is reduced, during charging, to metal in a lower valence/metal elemental state, which reversely forms, during discharging, the metal ion and has chelating/chemical adsorption bonds formed between it and the chelating/adsorption group. The negative electrode material can form a battery together with positive electrode materials.